Question

if x-2 is factor of 3xcube-2xcube+7xsquare-21x+k find value of k​

Answer 1

see the answer below

Answer 2

Step-by-step explanation:

let p (x)=0

x-2=0

x=2

put p(x)=2

p(x)=3x^3-2x^3+7x^2-21x+k=0

p(2)=3(2)^3-2(2)^3+7(2)^2-21(2)+k=0

= 24-16+28-42+k=0

=-6+k=0

=k=6Answer